Machine for winding packages of yarn or the like



June 28, 1955 P, HOBOURN 2,711,859

MACHINE FOR WINDING PACKAGES OF YARN OR THE LIKE Filed Feb. 27, 1953 a Sheets-Sneet 1 Fig.1.

Tznc/Wn 5783 15 0804: RN

June 28, 1955 P. HOBOURN 2,711,859

MACHINE FOR WINDING PACKAGES OF YARN OR THE LIKE Filed Feb. 27,1953 3 Sheets-Sheet 2 N VEN 7'02 'PEmcl'wvL Ls unno A a Baum! ATTORNEYS June 28, 1955 P. 1.. HOBOURN MACHIN E FOR WINDING PACKAGES OF' YARN OR THE LIKE 3 Sheets-Sheet 3 Filed Feb. 27, 1953 INVENTOE P ac K M y lam/mun Manna ATT United States Patent 2,711,859 MACHINE FOR WINDING PACKAGES 0F YARN OR THE LIKE Percival L. Hobouru, Detling. near Maidstone, England Application February 27, 1953, Serial No. 339,362 3 Claims. (Cl. 242-43) This invention relates to machines for winding packages of yarn or the like, hereinafter referred to simply as packages, and is concerned with machines for winding packages with at least one conical end.

A type of yarn winding machine is known in which the machine essentially comprises a rotatable winding spindle, a constant stroke traverse means reciprocable longitudinally with respect to the winding spindle, yarn guiding means pivoted on said traverse means for rocking in the general direction of reciprocation of the traverse means, and package-end taper control means for pro gresssively reducing the effective stroke of the yarn guiding means as the package grows, thereby to make at least one end of the package of conical form, said traverse means and the yarn guiding means supported thereby and said control means being mounted for lateral bodily movement with respect to the winding spindle as the package grows.

In this type of yarn winding machine it is known to employ an elongated control structure rockable about a pivotal axis located intermediately, preferably approximately midway, of its length and having a portion constituting a guideway for a reciprocable control element articulatingly connected to the traverse means and to yarn guiding means, the arrangement being such that as the package grows the elongated control structure is rocked about the pivotal axis referred to and the effective stroke of the yarn guiding means is automatically adjusted to form the package with at least one conical end, the degree of taper at the one or at both ends of the package being determined by the initial position of the rockable elongated control structure. The degree of taper at one end of the wound package is controlled by pre-fixing or pre-setting the point about which the elongated control structure pivots as a whole. An example of this kind of winding machine is illustrated in my copending Application Serial No. 339,361, filed February 27, 1953 and relating to an improved taper control structure and mounting means therefor.

The present invention has for its object to provide novel forms of yarn guiding means for use with taper control means for winding machines.

The yarn guiding means according to this invention have been found to be readily adaptable for use in winding yarns, such as that known under the trade name terylene, which hitherto have been diificult to wind into firm packages and one of the embodiments of the present invention which will now be more particularly described has provision for guiding the yarn up to within a short distance from the surface of the growing package. In the drawings,

Figures 1 and 2 are a side elevation and a cross section respectively of taper control means incorporating a novel form of yarn guiding means, especially adapted for use when winding terylene and yarns having similar physical characteristics, and Figure 3 is a detail view of parts of the slidable yarn guide proper with the yarn eye or nozzle,

Figures 4 and 5 are a fragmentary vertical cross section and a part-sectional side view respectively of another form of yarn guide incorporating a non-rocking yarn guide proper having a straight-line reciprocatory movement, and

Figures 6 and 7 are views similar to Figures 4 and 5 respectively, showing a form in which the yarn eye is provided on a reciprocatory part having a rocking mo tion in the plane of its reciprocation.

In the arrangement shown in Figures 1, 2 and 3, the traverse means comprises a horizontal rod 1 which is reciprocated, in known manner, over a path of constant stroke by means of a rotating helical cam (not shown) supported within a housing 2 on which the winding spindle 3 is rotatably mounted, the winding spindle 3 and the traverse rod 1 being parallel one to the other and both extending beyond one end of the housing 2. The traverse rod 1 is slidably supported by a frame 4 which is swingable about the axis of rotation of the traverse cam, so that as the package 5 grows the frame 4, with the traverse rod 1 and other components carried by the frame, is caused, by the direct contact of a freely revoluble bail roll 6 on said frame 4 with the package 5, to swing bodily away from the winding spindle 3 in a lateral direction. The above-described mechanism is well known in yarn winding machines of the type to which this invention relates.

The control means shown in Figures 1, 2 and 3 comprise an elongated control structure in the form of a single straight rod 7 having a longitudinal flat 8 on which is secured by fasteners (not shown) a bracket 10 having an extending lug 11. The lug 11 is received, and pivotally secured by a cross pin 12, within the forked end of a main pivot pin 13 which may engage one of a pair of holes 14 in a bearing bracket 15, thereby providing the rod 7 with a prefixed fulcrum. Alternatively, as shown, the pivot pin 13 may be received by one or other of a pair of holes provided in an adjustable fulcrum block 150 adapted for securement on one or other side of the bracket 15. Further details of this adjustable fulcrum means are to be found in the copending application already referred to. If a presettable fulcrum is employed by using the adjustable block 150, the control rod 7 is one of three rods differing one from the other by the distance at which the 111g 11 is spaced from the ball-shaped end 7A of the rod 7. The three rods with lug positions corresponding to the three possible positions of pivot pin 13, that is, directly engaged with a hole 14 of bracket 15 or offset to opposite sides of said bracket by the use of block 150, have been found by trial to cover adequately the range of taper control required in practice.

The bearing bracket 15 is mounted in a set position on the inner face of a bridge-like plate 16A forming part of a rigid rectangular frame 16. The control rod 7 is received within an open channel 1'7 in a slider 18 having a pin 19 adapted to engage in two slots, namely a curved slot 20 in a fixed plate 21 and a straight slot 22 (inclined to the vertical) in a rockablc plate 23 overlying fixed plate 21. The curvature of slot 29 is preferably of circular arc shape. The two plates 21 and 23, which form parts of the yarn-guiding means, are pivotally interconnected by pin 24, and also held in light facial contact by a washer 25 on pin 19. It will be understood that the term fixed as applied to the plate 21 is intended simply to distinguish it from the rockable plate 23, because in fact the plate 21 has a reciprocatory movement by reason of its securement to the traverse rod 1.

The so-called fixed plate 21 is attached to the traverse rod 1 and the upper end of the so-called rockable plate 23 is forked to receive a button-head pin 26A projecting from a lower slider 26 slidable on a rod 27 mounted parallel to the bail roll 6.

The lower slider 26 has an upwardly projecting peg 2613 which is received snugly but with freedom to slide in a channel 28A provided in the underside of an upper slider 28 which is slidable on a rod 29 arranged parallel to and vertically above rod 27, the channel 28A being at right angles to rods 27, 29. The upper slider 28 is formed with a flat rectangular wing 288 having a circular hole 28C therein which is bisected by a central slot 28D. A'ceramic nozzle 30 is inserted in the slider hole 280 and is prevented from passing right through the hole by a flange 39A which is formed with a Hat 30B adapted to rest on a clamping bolt 31 so that the nozzle 30 cannot turn within hole 28C. A longitudinal slot 30C in the nozzle 30 serves as an eye for the yarn and this slot 30C is aligned with the slot 28D of the slider wing 288 so as to facilitate threading the yarn through the nozzle eye. The front face 30E of the nozzle is sloped to allow the nozzle face to lie close to the package and thus secure the utmost control over the yarn upto the point of joining the package. The clamping bolt 31 has a longitudinal slot 31A therein for receiving the slotted upper part of the slider wing 28B and the clamping effect is obtained by means of a nut 32 on the bolt 31 which causes the wing 28B to lightly grip the nozzle 33.

The interconnected sliders 26, 28 are held against turning on rods 27, 29 and are guided as they slide longitudinally by causing a groove 26C on slider 26 to engage the front edge of the plate 16A and by causing slider 28 to fit under the overhanging front edge of a plate 33 secured to frame plate 16A. The rods 27, 29 and other moving parts are lubricated by oil supplied in suitable manner from an oiling device 34.

The ball-shaped end 7A of the control rod 7 engages snugly within a hole 35 in a link bar 36 swingably mounted on an end of the frame 16 by a pivot pin 37 The shank 140 of a trunnion 141 is secured by nuts 142 to link bar 36, said shank 140 passing through a curved guide slot 38 for engagement within another hole 39 in link bar 36, provided between the pivot pin 37 and the hole 35. The upper end of a radius rod 41 is clampable in a cross hole in trunnion 141 by a screw 143 to provide for any necessary adjustment, said rod 41 carrying at its lower end a spherical trunnion 42 adapted to be preset in a curved cam slot 43 provided in a bracket 44 secured to the housing 2, said slotted bracket constituting one of a series of builder cams.

Yarn (or thread) being wound on the bobbin 45 to form the pineapple package 5 is guided over a smooth, curved-edge shield 46 mounted on the frame 16.

From the drawings, especially Figure 2, it will be noted that when the attachment is mounted to incline the bail roll 6 to be parallel to the bobbin 45 on the winding spindle 3, so as to provide the angle required for the body of the package 5, the yarn guiding means',mov'ing in the same plane as the traverse rod 1, that is, parallel to the spindle 3, maintain connection with the control rod 7 by means of the channeled slider 18. By prefixing or pre setting the position of the pivot pin 13 on the control rod 7 a certain degree of taper may be provided at opposite ends of the package 5, that is, the opposite ends may have cones of the same angle or, as shown, of different angles.

The end cone angles may be varied by presetting the link bar 36 by adjustment of the radius rod 41 in relation to its slotted. bracket 44. Where the range of package end cones obtainable with various presettings (by the radius rod 41) is insufficient, another bearing bracket may be fitted giving a different fixed fulcrum for the rod 7, or alternatively the bracket 15 may be mounted for longitudinal adjustment on and in relation to frame 16. The form and relative disposition of the slots 20, 22 of the thread guide plates 21, 23 respectively also controls to a certain extent the shape of the finished package and further variations in package shape may be made by using differently slotted plates. In the particular embodiment illustrated in Figures 1 to 3 the slots and 22 are, in general, oppositely inclined, the inclination of the curved slot 20 being considered in relation to the chord of the circular arc curvature of said slot.

The alternative form of yarn guiding means shown in .4 Figures 4 and 5 comprises three parts, namely, the plate 21 fixed to and extending up from the outer end of the traverse rod 1, the plate 23 lying alongside of the fixed plate 21 and connected at its lower end by pivot 24 to said fixed plate 21 so as to be rockable with respect thereto in the general direction of reciprocation of the traverse rod 1, and a separate yarn eye 47 which constitutes the actual means for guiding the yarn to the package. The yarn eye 47 is slidably supported on a fixed guide rod 48 and has a tongue 49 adapted to engage a notch 50 in the upper end of the rockable plate 23, so that as the fixed plate 21 of the yarn guiding means is moved to and fro by the. reciprocating traverse rod 1, the rockable plate 23 slides the yarn eye 47 along its guide rod 48. The fixed plate 21 has a'slot 20 of arcuate form and the slot 22 in the rockable plate 23 is inclined in such a manner that, when the pivot pin 19 carried by the slider block 17 and engaging the two slots is moved in a direction normal to the traverse rod 1, the rockable plate 23 is caused to pivot on the fixed plate 21.

The various parts of the attachment are so assembled that when the fixed plate 21 of the thread guiding means is located approximately midway of the constant stroke of the traverse rod 1, the pivot pin 19 of the slider block 17 is situated about midway of the oppositely inclined slots 20, 22 of the fixed and rockable plates 21, 23 respectively of the yarn guiding means. Viewed from the side the fixed plate 21 of the yarn guiding means would be seen as vertically disposed. The rockable plate 23 then lies substantially in line with the vertical fixed plate 21 so that the yarn nozzle 30 or equivalent eye 47 or 51 drivingly connected to the rockable plate 23 is also at its midstroke position. This midstroke position of the thread guiding means also coincides in the drawings with the position of the fixed pivot pin 13 on which the control rod 7 is rockably mounted.

Figures 6 and 7 show how the more usual form of looped-wire yarn eye is applied to yarn guiding means according to this invention. In this case the looped-wire yarn eye 51 is carried directly by plate 23 which is shaped or provided with means to hold the plate in sliding contact with a guide rod 52. An oiling pad 53 is carried by the frame plate 16A for transferring lubricant to the plate 23.

When the assembly of parts which comprises the traverse rod frame 4 and the associated control means and yarn guiding means is swung inwards to the no-pacakage position, that is, when the bail roll 6 is contacting the winding spindle 3 or an empty bobbin 45, or spool thereon, the control rod 7 is tilted upon the pivot pin 19 to position of maximum inclination.

As the winding operation proceeds the growing package, acting upon the bail roller 6, causes the abovementioned assembly of parts to swing slowly about the axis of rotation of the traverse cam and, as a consequence, the free end of the control rod 7 is progressively lifted by the rocking of link bar 36 under the influence of the radius rod 41. At the commencement of the winding operation the rockable plate 23 of the yarn guiding means, which at its midstroke position is always substantially vertical, is caused to tilt outwards at each end of the traverse stroke. By the time the package has grown sufficiently to move the parts so that the control rod 7 has reached the substantially horizontal position the rockable plate 23 remains substantially vertical throughout the traverse stroke. Thereafter the control rod 7, now tilting in the opposite direction to that which it possessed initially, causes the rockable plate 23 to incline inwards more and more as the package nears com pletion. It will be understood that the tilting of the control rod 7 takes place gradually, with consequential progressive shortening of the stroke of the yarn nozzle 30 or equivalent eye which is under the influence of the rockable plate 23, although the cam-derived stroke of the traverse rod 1 remains constant throughout the winding operation.

I claim:

1. In a package end taper control means for a yarn winding machine of the type referred to, and incorporating a taper control structure as hereinbefore defined, yarn guiding means comprising a first slotted element secured to the constant-stroke traverse means and a second slotted element pivoted to said first element for rocking in the general direction of traverse and constituting the yarn guide proper and a single pivot commonly engaging the slots of both slotted elements and serving to directly connect said slotted elements to said control structure, the said slots co-operating to the end that a vertical movement produced through said control structure in said single pivot results in proportional horizontal movement of the guided yarn.

2. In a package end taper control means for a yarn Winding machine of the type referred to, and incorporating a taper control structure as hereinbefore defined, yarn guiding means comprising a first slotted plate secured to the constant-stroke traverse means, a second slotted plate pivoted to said first plate for rocking in the general direction of yarn traverse, a first slider mounted for straight-line non-rocking movement in the general direction of yarn traverse and drivingly engaged with said rocking second plate, a second slider mounted for straight-line non-rocking movement parallel to said first slider and drivingly engaged therewith, a yarn eye carried by said second slider, and a single pivot commonly engaging the slots of both slotted plates and serving to directly connect said slotted plates to said control structure, the said slots co-operating to the end that a vertical movement produced through said control structure in said single pivot results in proportional horizontal movement of the guided yarn.

3. Taper control means according to claim 2, wherein the two sliders are mounted for reciprocation on a pair of parallel rods.

References Cited in the file of this patent UNITED STATES PATENTS 1,171,544 Ryden Feb. 15, 1916 2,372,136 Swift Mar. 20, 1945 FOREIGN PATENTS 340,207 France May 6, 1904 

1. IN A PACKAGE END TAPER CONTROL MEANS FOR A YARN WINDING MACHINE OF THE TYPE REFERRED TO, AND INCORPORATING A TAPER CONTROL STRUCTURE AS HEREINBEFORE DEFINED, YARN GUIDING MEANS COMPRISING A FIRST SLOTTED ELEMENT SECURED TO THE CONSTANT-STROKE TRAVERSE MEANS AND A SECOND SLOTTED ELEMENT PIVOTED TO SAID FIRST ELEMENT FOR ROCKING IN THE GENERAL DIRECTION OF TRAVERSE AND CONSTITUTING THE YARN GUIDE PROPER AND A SINGLE PIVOT COMMONLY ENGAGING THE SLOTS OF BOTH SLOTTED ELEMENTS AND SERVING TO DIRECTLY CONNECT SAID SLOTTED ELEMENTS TO SAID CONTROL STRUCTURE, THE SAID SLOTS CO-OPERATING TO THE END THAT A VERTICAL MOVEMENT PRODUCED THROUGH SAID CONTROL STRUCTURE IN SAID SINGLE PIVOT RESULTS IN PROPORTIONAL HORIZONTAL MOVEMENT OF THE GUIDED YARN. 